Weber, Megan MCibulka, Daniel2021-11-012021-11-012021-11-01https://hdl.handle.net/11299/225198These files contain environmental data from the study area from December 2020 through September 2021 as well as data about the individual recovered Corbicula fluminea specimens. A prepared manuscript will be available with detailed information regarding experimental methods and analysis. A Readme file is also available to provide a full description of the available data sets.Corbicula fluminea is regarded as one of the most pervasive freshwater aquatic invasive species in the world. It has been widely cited to have a lower lethal temperature threshold of 2 degrees Celcius, which suggests the species would be unable to survive in Minnesota outside of areas of thermal refuge from sources such as power plant, water treatment facility, and other raw water user effluent). In August 2020 a volunteer participating in Starry Trek, an aquatic invasive species early detection event, recovered live C. fluminea from an inland Minnesota lake with no known thermal refuge (Briggs Lake, Sherburne County). This data set documents the distribution, overwinter survival, and size class structure of the population in Briggs Lake and observational data at a nearby lake (Big Lake, Sherburne County) where additional clams were discovered by a volunteer towards the end of the Briggs Lake project timeline. The data from this study are available here for public use.Attribution-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-sa/3.0/us/Corbicula flumineacold tolerancerange expansionaquatic invasive speciesDatasethttps://doi.org/10.13020/vjnc-p894